I'm a Canon shooter, but I think you should, as specifically as possible, find out why your wife does not like your current Nikon setup. This will help you figure out if you really want to "start over" in the Canon line, or maybe go with something more compact in the Nikon line (perhaps something with a mirrorless body if she wants a smaller footprint?)

I agree with the other posters that, if possible, you should stay in the same compatibility tree so you can share lenses and other accessories.

After decades of (amateur) camera bags full of lenses & etc, I abandoned them all in favor of exploration of the zoom-lens capacity of the new pocket digitals. After wearing a few of them out in both Nikon & Canon marque, I've landed the last few year on a larger still-pocket Canon Power Shot SX700 HS.

No changeable lenses, yet really serviceable lens from macro to 30x telephoto. Can run full auto or set any manual you want. Plus a lot of tricks only the digital gear can do, most of which I rarely use.

I'm sure there is a newer more fantastic pocket size that has even better service....yet after all those years of (3 at last count) bags of gear needed for whatever shot I thought I wanted, these branch of the hobby has some surprisingly good results.

To even further the complication of your issue: If she really will not accept any of the smaller Nikon bodies for whatever reason and you are going to add another system to the flock have her look into the Fuji line. Two of my friends shoot Fuji and are extremely happy with their purchase. I have seen work from both of them and it is excellent. They are both very adept at composition and exposure and the results are as good as the "Big Two". One of these folks came from Nikon and the other from Canon. Both wanted a more compact system for day to day shooting and neither gave up their larger systems which had more lenses.

Canon consumer grade lenses suck. Stick with Nikon or go mirrorless. Good Canon glass is $$$$, Nikon consumer glass is good for the money. Fuji consumer glass is fantastic.

quote:

Originally posted by ChuckWall:
Canon consumer grade lenses suck...

Thread drift...

Totally disagree. Some are certainly worse than others (notably the “kit” lenses) but having shot Nikon prosumer bodies in the past (D200, D300, D90) with Nikon glass and moved to Canon I am just as satisfied or more with Canon lenses.